ONSEMI LM317D2TG Adjustable Linear Voltage Regulator, 1.2-37V 1.5A, TO-263-3

The ONSEMI LM317D2TG is a highly versatile and robust adjustable 3-terminal positive linear voltage regulator. This component is designed to supply in excess of 1.5A over a wide output voltage range from 1.2V to 37V, making it an indispensable part for a huge variety of electronic designs. Its operation is exceptionally straightforward, requiring only two external resistors to set the precise output voltage, which simplifies circuit design and prototyping.

Engineered for reliability, the regulator incorporates several key protection features. These include internal current limiting, thermal shutdown, and safe-area compensation for the output transistor. This combination makes the device essentially 'blow-out proof', safeguarding both the regulator and the connected circuitry from damage due to overloads, short circuits, or excessive temperatures.

Key Features & Applications

Beyond basic voltage regulation, the LM317D2TG's floating operation allows for use in high-voltage applications. It can be configured as a programmable output regulator or, by connecting a fixed resistor, as a precision current regulator. This flexibility eliminates the need to stock numerous fixed-voltage regulators, saving on inventory and cost.

It is ideally suited for local, on-card regulation in power supplies, battery chargers, and precision instrumentation. Its surface-mount TO-263-3 (D2PAK) package offers efficient power dissipation in a compact form factor, suitable for modern PCB designs.

With internal thermal overload protection and short-circuit current limiting that remains constant with temperature, this Pb-free device from ONSEMI delivers professional-grade performance and durability for demanding electronic projects and commercial products.